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<title>DATABASE: Redox Reactions</title>
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<h3>Redox reactions:</h3>

<p>Between <b>components</b>: The formation reactions for <i>both</i> redox species
in a redox couple must be given. For example:</p>
<p class="indent">
<nobr><tt>Fe 2+;13.02;;;Fe 3+;1;;;e-;1;;;;;;;0</tt></nobr><br>
<nobr><tt>Fe 3+;-13.02;;;Fe 2+;1;;;e-;-1;;;;;;;0</tt></nobr>
</p>

<p>This allows DATABASE to find both <nobr>Fe(II)</nobr> when
<nobr><tt>Fe</tt>&nbsp;<tt>3+</tt></nobr> is chosen as component,
and to find <nobr>Fe(III)</nobr> when <nobr><tt>Fe</tt>&nbsp;<tt>2+</tt></nobr>
is included as component. Note the sign <nobr>(+</nobr> or <nobr>&#8722;)</nobr>
for the formation equilibrium constant and for the stoichiometric coefficients.</p>

<p><b>Products of redox-reactions:</b> for example, the formation of magnetite:</p>

<p class="indent">
<nobr>3&nbsp;Fe<sup>2+</sup></nobr>  <nobr>+&nbsp;4&nbsp;H<sub>2</sub>O</nobr>
	<img src="images/rlh.gif" alt="=" border="0" width="14" height="10">
	<nobr>2&nbsp;e<sup>&#8722;</sup></nobr> <nobr>+&nbsp;8&nbsp;H<sup>+</sup></nobr>  <nobr>+&nbsp;Fe<sub>3</sub>O<sub>4</sub>(s)</nobr>
</p>

<p class="cont">line in the database:</p>
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<nobr><tt>Fe3O4(s);-41.58;;;Fe 2+;3;H+;-8;e-;-2;H2O;4;;;;;-8</tt></nobr>
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